<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <title>demo</title>
    <link rel="stylesheet" href="../lib/bootstrap/4.5.2/css/bootstrap.min.css">
  </head>
  <body>
    <div class="container p-5">
      <a
        href="tel:10086"
        class="btn btn-success btn-lg btn-block"
      >拔打中国移动 10086</a>
    </div>
  </body>
</html>
